ÊSour Salt is a natural preservative and additive used for its sour taste, which is why it may also be referred to as Citric Acid. Suggested Use: ÊIt is most commonly used as a preservative and flavoring for soft drinks, as well as an additive to ice cream. Sour Salt can be substituted for lemon juice and vinegar in recipes where a dry ingredient is preferred. Ingredients: ÊSour Salt Basic Prep: ÊReady to use. Add to recipe as called for.